Hearing aid



FIG. 1 is a bottom perspective view of a hearing aid;

FIG. 2 is a left side perspective view of the hearing aid;

FIG. 3 is a right side perspective view of the hearing aid;

FIG. 4 is a front perspective view of the hearing aid;

FIG. 5 is a rear perspective view of the hearing aid;

FIG. 6 is a top perspective view of the hearing aid;

FIG. 7 is a bottom perspective view of the hearing aid;

FIG. 8 is a bottom perspective view of the hearing aid without a cover;

FIG. 9 is a left side perspective view of the hearing aid without the cover;

FIG. 10 is a right side perspective view of the hearing aid without the cover;

FIG. 11 is a front perspective view of the hearing aid without the cover;

FIG. 12 is a rear perspective view of the hearing aid without the cover;

FIG. 13 is a top perspective view of the hearing aid without the cover;

FIG. 14 is a bottom view of the hearing aid without an ear dome;

FIG. 15 is a bottom perspective view of the hearing aid without an ear dome;

FIG. 16 is a left side perspective view of the hearing aid without the ear dome;

FIG. 17 is a right side perspective view of the hearing aid without the ear dome;

FIG. 18 is a front perspective view of the hearing aid without the ear dome;

FIG. 19 is a rear perspective view of the hearing aid without the ear dome;

FIG. 20 is a top perspective view of the hearing aid without the ear dome;

FIG. 21 is a bottom perspective view of the hearing aid without the ear dome;

FIG. 22 is a rear perspective view of a cover of the hearing aid;

FIG. 23 is a left side perspective view of the cover;

FIG. 24 is a right side perspective view of the cover;

FIG. 25 is a front perspective view of the cover;

FIG. 26 is a rear perspective view of the cover;

FIG. 27 is a top view of the cover;

FIG. 28 is a bottom view of the cover;

FIG. 29 is a bottom perspective view of the hearing aid without the retention device;

FIG. 30 is a left side perspective view of the hearing aid without the retention device;

FIG. 31 is a right side perspective view of the hearing aid without the retention device;

FIG. 32 is a front perspective view of the hearing aid without the retention device;

FIG. 33 is a rear perspective view of the hearing aid without the retention device;

FIG. 34 is a top perspective view of the hearing aid without the retention device; and,

FIG. 35 is a bottom perspective view of the hearing aid without the retention device. 

The ornamental design for a hearing aid, as shown and described. 